IMHO.

Single-player games like Rise of Mutant Swarms

Below are 8 single-player Steam games similar to Rise of Mutant Swarms, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.

Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Rise of Mutant Swarms page.

Ranked picks

  1. 1
    Galaxy Critter Co. — Steam game cover

    Galaxy Critter Co.

    Single-player alternative to Rise of Mutant Swarms — playable solo, no multiplayer required. Shares Strategy with Rise of Mutant Swarms.

    Galaxy Critter Co. is a cute chaotic roguelike where tower defense meets top-down shooting: build by day, fight by night, and craft broken synergies to survive the Swarm.

    2026ActionStrategyIndieSingle-playerSimilar games →
  2. 2
    Raging Titan — Steam game cover

    Raging Titan

    Single-player alternative to Rise of Mutant Swarms — playable solo, no multiplayer required. Shares Strategy with Rise of Mutant Swarms.

    Build your towers, plan your efforts, watch out for changing paths and strike back against the alien invaders in this challenging tower defense game!

    2016StrategyIndieCasual4.99 USDSingle-playerSimilar games →
  3. 3
    X-Morph: Defense — Steam game cover

    X-Morph: Defense

    Single-player alternative to Rise of Mutant Swarms — playable solo, no multiplayer required. Shares Strategy with Rise of Mutant Swarms.

    Unique fusion of a top-down shooter and tower defense strategy. You are the invader! Use destructive weapons or lead your enemies into a maze of towers. Strategize in the build mode by carefully selecting various types of alien towers or throw yourself right into the heat of the battle.

    2017ActionStrategyIndie3.99 USDDeck PlayableSingle-playerSimilar games →
  4. 4
    Stronghold Crusader: Definitive Edition — Steam game cover

    Stronghold Crusader: Definitive Edition

    Single-player alternative to Rise of Mutant Swarms — playable solo, no multiplayer required. Shares Strategy with Rise of Mutant Swarms.

    Gird your loins and sharpen your steel! Besiege 20 unique enemy lords and battle friends online, in this expanded remaster of the classic 'castle sim'. Relive history with new units, opponents, visuals, audio, campaigns, skirmish trails, co-op and larger maps.

    2025StrategySimulation19.99 USDDeck PlayableSingle-playerSimilar games →
  5. 5
    Infested Planet — Steam game cover

    Infested Planet

    Single-player alternative to Rise of Mutant Swarms — playable solo, no multiplayer required. Shares Strategy with Rise of Mutant Swarms.

    Command a team of 5 elite soldiers against an alien horde of 100,000. Surrounded on all sides, you must outmaneuver and outsmart the enemy.

    2014ActionStrategyIndie14.99 USDDeck PlayableSingle-playerSimilar games →
  6. 6
    Sunbreak War — Steam game cover

    Sunbreak War

    Single-player alternative to Rise of Mutant Swarms — playable solo, no multiplayer required. Shares Strategy with Rise of Mutant Swarms.

    A light Rogue strategy game centered on building and defense. Build your territory, recruit soldiers to fend off enemies. 9 maps, 6 weapons (30 talents), 40 monsters, 30 units/buildings. Plan your pace, control soldiers, choose abilities—enjoy command and strategy.

    2026ActionStrategyIndie8.99 USDDeck PlayableSingle-playerSimilar games →
  7. 7
    Starship Troopers: Terran Command — Steam game cover

    Starship Troopers: Terran Command

    Single-player alternative to Rise of Mutant Swarms — playable solo, no multiplayer required. Shares Strategy with Rise of Mutant Swarms.

    Lead the Mobile Infantry in this RTS game set in the Starship Troopers film universe. Balance your army composition with a diverse set of unit types, overcome line-of-sight and line-of-fire challenges through tactical positioning, and use special abilities to smash the Arachnid hordes!

    2022Strategy29.99 USDDeck PlayableSingle-playerSimilar games →
  8. 8
    Hold The Mine — Steam game cover

    Hold The Mine

    Single-player alternative to Rise of Mutant Swarms — playable solo, no multiplayer required. Shares Strategy with Rise of Mutant Swarms.

    Explore and defend your mine against waves of monsters in this innovative roguelike survival game! Collect and manage your resources, discover buildings with unique effects and unleash mighty heroes to hold monsters out of the mine until the sun rises.

    2026StrategyEarly Access14.99 USDDeck PlayableSingle-playerSimilar games →